This list is from a year ago: https://www.stereo.net.au/forums/topic/245930-r2r-multibit-dac-manufacturers-list-chip-or-discrete/
If you google "list of r2r DACs" you'll get a lot more info but hopefully, some will chime in with their personal take.
All the best,
Nonoise
If you google "list of r2r DACs" you'll get a lot more info but hopefully, some will chime in with their personal take.
All the best,
Nonoise